The margin of victory has narrowed between two state senators in the Republican primary for Wisconsin's open congressional seat.

Glenn Grothman defeated three other candidates, including state Sen. Joe Leibham and state. Rep. Duey Stroebel, in the race to succeed retiring U.S. Rep. Tom Petri. But, as election results trickled in from Sheboygan County the gap between Grothman and Liebham closed to within 215 votes.

"Out of respect to the voters of the 6th Congressional District, I believe we need to allow the election officials to finish counting and double checking all of the votes cast in Tuesday's election," the Leibham campaign said.